787 Autothrottle- Is it Possible to Engage Climb Thrust?

I’m really struggling to make sense of the 787- even after having it for 6mos now. I usually only fly patterns to take video clips of takeoffs and landings- but I’d love to actually fly a route with it if I can figure out the goofy autopilot…

One of the things that mystifies me is that every single takeoff, no matter the weight is at 100%, and I can’t get any climb thrust reduction, that I know of. Is there a workaround, or do we just guess or set the thrust manually until we transition into a somewhat managed climb?

Yes you can. There is a specific page in the FMC dedicated to that. I forget what it’s called. But be aware that a Boeing does not fly like an Airbus